K R A ME R E LE CT R O N IC S L TD .
Contents 1 Introduction 1 2 2.1 2.2 2.3 3 3.1 Getting Started Achieving the Best Performance Safety Instructions Recycling Kramer Products Overview Defining the VM-24HC 2 Input 1:4 HDMI Distributor 2 2 3 3 4 5 4 Connecting the VM-24HC 6 5 5.1 5.2 5.3 Using the VM-24HC 2 Input 1:4 HDMI Distributor Selecting an Active Input Connecting a PC/Controller via RS-232 Acquiring the EDID 8 8 8 9 6 Technical Specifications 11 7 Default Communication Parameters 12 8 Default EDID 13 9 9.1 9.
1 Introduction Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been providing a world of unique, creative, and affordable solutions to the vast range of problems that confront video, audio, presentation, and broadcasting professionals on a daily basis.
2 Getting Started We recommend that you: Unpack the equipment carefully and save the original box and packaging materials for possible future shipment Review the contents of this user manual i 2.1 Go to http://www.kramerelectronics.com/support/product_downloads.asp to check for up-to-date user manuals, application programs, and to check if firmware upgrades are available (where appropriate).
2.2 Safety Instructions ! 2.3 Caution: There are no operator serviceable parts inside the unit Warning: Use only the Kramer Electronics input power wall adapter that is provided with the unit Warning: Disconnect the power and unplug the unit from the wall before installing Recycling Kramer Products The Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC aims to reduce the amount of WEEE sent for disposal to landfill or incineration by requiring it to be collected and recycled.
3 Overview The VM−24HC is a high−performance switcher and distribution amplifier for HDMI signals. The unit accepts one of two HDMI inputs and distributes the selected signal to four HDMI outputs simultaneously. The VM-24HC features: A maximum data rate of 6.75Gbps (2.
3.1 Defining the VM-24HC 2 Input 1:4 HDMI Distributor This section defines the VM-24HC. Figure 1: VM-24HC 2 Input 1:4 HDMI Distributor # Feature 1 IR Receiver IR signal sensor for the IR remote control 2 IR LED Lights yellow when the device receives an IR signal 3 POWER LED Lights green when the device receives power 4 EDID READ Button Press to acquire the EDID following selecting the EDID source.
4 Connecting the VM-24HC i Always switch off the power to each device before connecting it to your VM-24HC. After connecting your VM-24HC, connect its power and then switch on the power to each device. To connect the VM-24HC as illustrated in the example in Figure 2: 1. Connect the two HDMI sources, for example, a DVD player and a set top box to the INPUT 1 and INPUT 2 connectors, respectively. 2. Connect the HDMI OUTPUT connectors to up to 4 HDMI acceptors.
Figure 2: Connecting the VM-24HC 2 Input 1:4 HDMI Distributor VM-24HC - Connecting the VM-24HC 7
5 Using the VM-24HC 2 Input 1:4 HDMI Distributor The VM-24HC always displays the video output on all of the four outputs at the same time (once they are ready to display the output) upon power up and when switching an input (from IN 1 to IN 2 and vice versa). This section describes: 5.1 Selecting an Active Input (see Section 5.1) Connecting a PC/Controller via RS-232 (see Section 5.2) Acquiring the EDID (see Section 5.
5.3 Acquiring the EDID Initially the VM-24HC operates with the factory default EDID stored in the nonvolatile memory. The source reads the EDID from the device when the device is plugged in or powered on. This is usually done only once when the unit is being set up in an installation. Once acquired, the EDID is saved in non-volatile memory and further acquisition is not necessary. The VM-24HC reads the EDID, which is stored in the non-volatile memory.
2. Press the EDID READ button. When the LED stops flashing the EDID from Output 3 is stored at the input.
6 Technical Specifications INPUTS: 2 HDMI connectors OUTPUTS: 4 HDMI connectors BANDWIDTH: Supports up to 2.25Gbps bandwidth per graphic channel COMPLIANCE WITH HDMI STANDARD: Supports HDMI and HDCP CONTROLS: EDID SELECT, EDID READ, IN 1, IN 2 buttons, RS-232, IR INDICATOR LEDs: POWER, IR, OUTPUT POWER CONSUMPTION: 5V DC, 1.1A OPERATING TEMPERATURE: 0° to +40°C (32° to 104°F) STORAGE TEMPERATURE: -40° to +70°C (-40° to 158°F) HUMIDITY: 10% to 90%, RHL non-condensing DIMENSIONS: 21.
7 Default Communication Parameters EDID EDID data is passed between Output 1 and Input 1 RS-232 Protocol 2000 12 Baud Rate 9600 Data Bits 8 Stop Bits 1 Parity None Command Format HEX Example (Output 1 to Input 1) 0x01, 0x81, 0x81, 0x81 VM-24HC - Default Communication Parameters
8 Default EDID Monitor Model name............... VM24HC Manufacturer............. KRM Plug and Play ID......... KRM0023 Serial number............ 505-707455010 Manufacture date......... 2009, ISO week 10 Filter driver............ None ------------------------EDID revision............ 1.3 Input signal type........ Digital Color bit depth.......... Undefined Display type............. RGB color Screen size.............. 520 x 320 mm (24.0 in) Power management.........
CE video identifiers (VICs) - timing/formats supported 1920 x 1080p at 60Hz - HDTV (16:9, 1:1) 1920 x 1080i at 60Hz - HDTV (16:9, 1:1) 1280 x 720p at 60Hz - HDTV (16:9, 1:1) [Native] 720 x 480p at 60Hz - EDTV (16:9, 32:27) 720 x 480p at 60Hz - EDTV (4:3, 8:9) 720 x 480i at 60Hz - Doublescan (16:9, 32:27) 720 x 576i at 50Hz - Doublescan (16:9, 64:45) 640 x 480p at 60Hz - Default (4:3, 1:1) NB: NTSC refresh rate = (Hz*1000)/1001 CE audio data (formats supported) LPCM 2-channel, 16/20/24 bit depths at 32/44/48
9 Protocol 2000 This RS-232/RS-485 communication protocol uses four bytes of information as defined below. For RS-232, a null-modem connection between the machine and controller is used. The default data rate is 9600 baud, with no parity, 8 data bits and 1 stop bit. Note: Compatibility with Kramer’s Protocol 2000 does not mean that a machine uses all of the commands below. Each machine uses a sub-set of Protocol 2000, according to its needs. 9.
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For the latest information on our products and a list of Kramer distributors, visit our Web site where updates to this user manual may be found. We welcome your questions, comments, and feedback. Web site: www.kramerelectronics.com E-mail: info@kramerel.
